Pentax smc DA 50mm f/1.8 APS-C

Very fast f/1.8 maximum aperture is ideal for low light situations

May 21, 2012
A fast f/1.8 lens for cameras with a Pentax K mount. In full-frame (35mm) format, this is considered a "normal" lens. Mounted to a camera with an APS-C sensor, this lens gives an angle of view equivalent to a 76.5mm telephoto lens--ideal for portraits. The wide f/1.8 aperture makes this an essential lens for working in low light, and it also delivers beautiful bokeh (the out-of-focus portion of a photograph). This lightweight (4.3 oz) lens is very compact--just 1.5" (3.8 cm) long. The addition of Pentax Super Protect (SP) coating to the lens helps prevent dust, water, grease and other substances from attaching themselves to a lens and degrading image quality.

Very fast f/1.8 maximum aperture is ideal for low light situations and produces pleasing bokeh in the out-of-focus areas of a photograph 50mm normal lens in 35mm or full-frame format, or 76.5mm telephoto equivalent in APS-C format The lens is treated with the Pentax's original SP (Super Protect) coating, which repels dust, water, grease, and other substances that may adhere to the surface of the lens. The protective coating promotes trouble-free use in all kinds of shooting situations.

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Specifications

Lens type

Prime lens

Max Format size

35mm FF

Focal length

50 mm

Image stabilization

No

Lens mount

Pentax KAF

Aperture

Maximum aperture

F1.8

Minimum aperture

F22.0

Aperture ring

Yes

Number of diaphragm blades

8

Optics

Elements

6

Groups

5

Focus

Autofocus

Yes

Motor type

Ultrasonic

Full time manual

No

Focus method

Internal

Distance scale

No

DoF scale

No

Physical

Weight

122 g (0.27
lb)

Diameter

63 mm (2.48")

Length

39 mm (1.54")

Sealing

Yes

Color

Black

Filter thread

52 mm

Hood supplied

No

Hood product code

RH-RA

Tripod collar

No

Accessories

Images

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